Changes since verion 1-1-7
	* the EV formula is fixed for the log-normal model
	* improved version of the texreg method


Changes since version 0.1-4
	* major revision for the code and the vignette ; bc and ihs
	transformation, heteroscedasticity are introduced

Changes since version 0.1-2 :

	* minor changes of the vignette

Changes since version 0.1-1 :

	* major update of the whole code
	* much improved vignette
	
Changes since version 0.1-0 :
	
	* some encoding problems in the vignette are fixed